In [1]: import os

In [2]: import git

In [3]: r = git.Repo.clone_from("https://github.com/conda-forge/feedstocks", "feedstocks")

In [4]: r.create_submodule(name="addict", path=os.path.join("feedstocks", "addict"), url="https://github.com/conda-forge/addict-feedstock", branch="master")
Out[4]: ---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
/zopt/conda2/envs/test/lib/python3.6/site-packages/IPython/core/formatters.py in __call__(self, obj)
    700                 type_pprinters=self.type_printers,
    701                 deferred_pprinters=self.deferred_printers)
--> 702             printer.pretty(obj)
    703             printer.flush()
    704             return stream.getvalue()

/zopt/conda2/envs/test/lib/python3.6/site-packages/IPython/lib/pretty.py in pretty(self, obj)
    393                             if callable(meth):
    394                                 return meth(obj, self, cycle)
--> 395             return _default_pprint(obj, self, cycle)
    396         finally:
    397             self.end_group()

/zopt/conda2/envs/test/lib/python3.6/site-packages/IPython/lib/pretty.py in _default_pprint(obj, p, cycle)
    508     if _safe_getattr(klass, '__repr__', None) is not object.__repr__:
    509         # A user-provided repr. Find newlines and replace them with p.break_()
--> 510         _repr_pprint(obj, p, cycle)
    511         return
    512     p.begin_group(1, '<')

/zopt/conda2/envs/test/lib/python3.6/site-packages/IPython/lib/pretty.py in _repr_pprint(obj, p, cycle)
    699     """A pprint that just redirects to the normal repr function."""
    700     # Find newlines and replace them with p.break_()
--> 701     output = repr(obj)
    702     for idx,output_line in enumerate(output.splitlines()):
    703         if idx:

/zopt/conda2/envs/test/lib/python3.6/site-packages/git/objects/submodule/base.py in __repr__(self)
    170     def __repr__(self):
    171         return "git.%s(name=%s, path=%s, url=%s, branch_path=%s)"\
--> 172                % (type(self).__name__, self._name, self.path, self.url, self.branch_path)
    173 
    174     @classmethod

/zopt/conda2/envs/test/lib/python3.6/site-packages/gitdb/util.py in __getattr__(self, attr)
    254         to be created and set. Next time the same attribute is reqeusted, it is simply
    255         returned from our dict/slots. """
--> 256         self._set_cache_(attr)
    257         # will raise in case the cache was not created
    258         return object.__getattribute__(self, attr)

/zopt/conda2/envs/test/lib/python3.6/site-packages/git/objects/submodule/base.py in _set_cache_(self, attr)
    133             self._branch_path = reader.get_value(self.k_head_option, git.Head.to_full_path(self.k_head_default))
    134         elif attr == '_name':
--> 135             raise AttributeError("Cannot retrieve the name of a submodule if it was not set initially")
    136         else:
    137             super(Submodule, self)._set_cache_(attr)

AttributeError: Cannot retrieve the name of a submodule if it was not set initially